Outstanding Antique Natural Nephrite Black Jade Bangle Bracelet, made in Japan between 1870 &can1920. Most know that popular jade comes in green colors. However,this bangle bracelet is from a very rare piece of black nephrite jade stone. The artisan followed the original pattern of the stone hand carved and simply polished. It has a lovely, smooth, and even texture. Interior Measures approximately 2.5" across. It's about .25" thick. In excellent condition.